书籍是什么东西？
生命是珍贵的礼物。
This class isa pleasure to teach.
教这个班是件令人愉快的事。
My Mother isa kind and gentle woman.
我的母亲是一位心地善良、性情温和的女性。
生活是一首歌曲，歌唱它吧。
生活是一场游戏，参与它吧。
She isa student at a college in our town.
她是我们镇子里的一名大学生。
There isa desk and two chairs in the room.
房间里有一张桌子和两把椅子。
For example, reading isa good way to get knowledge.
比如，阅读就是获取知识的一个好方法。
Cost isa concern, especially for smaller companies.
成本是一个考虑，尤其对小公司来说。
As to whether it isa blessing or a curse, however, people take different attitudes.
然而，对于此类问题，人们持不同的看法。
There isa complimentary breakfast. / Breakfast is included in the price of the room.
早餐免费提供。／早餐已包含在房间费用内。
Through him, I met his wife, Isa.
进而我认识了他的妻子，伊莎。
Blessed are all they that wait for him. "Isa."
凡等候祂的，都是有福的。
启动ISA。
The objective is to study the tissue distribution of 3,4-o-isopropylidene-shikimic acid(ISA).
目的是研究3，4-O-异亚丙基莽草酸（ISA）的组织分布。
The objective is to study the tissue distribution of 3,4-o-isopropylidene-shikimic acid(ISA).
目的是研究3，4-O-异亚丙基莽草酸（ISA）的组织分布。
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